3 PICs Also important to domestic and international markets Traceability of food products The first letter is N for New South Wales. The second letter is a check digit The next two numbers are for the LLS region The final four numbers make up your property number Unique to your property If you move, the PIC stays with the property and you will need to apply for a PIC for your new property, or become the PIC manager for its current PIC How to apply for a PIC Fill out a PIC application form Send to Braidwood office Mail: PO Box 97 Braidwood NSW 2622 You will receive an invoice $11 for ratepayers one-time fee (above 10ha) $22 per year for non-ratepayers (below 10ha) And an information package with your PIC 3

4 Annual Land and Stock Returns If you are a Local Land Services ratepayer (>10 hectares) or have a PIC you will receive a return Due by 31 August, all stock six months or older on the property as of 30 June Online By mail Local Land Services Locked Bag 6013 Orange NSW 2800 Critical information during an emergency (fires or floods) Moving horses in NSW 4

5 Transported Stock Statement (TSS) Required when horses are travelling within NSW by vehicle Exceptions Interstate, <30km in NSW Veterinary treatment To or from a show, exhibition, or other event Transported for work Purchase TSSs from your local LLS office (Braidwood, Cooma, or Bega) Worm control in horses 5

6 The worms 6

7 Small strongyles Cyathostomins or small red worms 40 species, adults in caecum and colon Acquired on pasture Migrate through intestinal mucosa Less disease compared to large strongyles Life cycle length as short as 5-6 weeks Only produce diseases at very high burdens Emergence of larvae (L4) from gut wall sudden weight loss, diarrhea, no eggs, highly fatal Very common! 7

9 Large strongyles Strongylus vulgaris, S. edentatus, S. equinus large red worms Adults in the large intestine, migrate outside intestine Life cycle length 6-11 months S. vulgaris can cause thrombosis and inflammation of arteries during migration Clinical signs weakness, emaciation, diarrhea, pale mucous membranes, colic (S. vulgaris) Low red blood cell counts Infection now very rare! Parasite refugia The portion of a population of parasites that escapes selection with the drug at the time of a treatment Stages not affected by treatment All free-living parasite stages on the pasture All parasites in the animals that were not treated Dilute resistant worms 9

10 Other important concepts 20% of adult horses shed 80% of the eggs This characteristic for a horse is very stable over time If you treat only those horses with a high egg count you leave more parasites in refugia In one study, if you treat all horses with a strongyle worm egg count of 200 eggs per gram you only treat 50% of the horses but you still get a 95% reduction of the overall egg shedding Goals of parasite control Limit parasite infection Healthy horses No clinical evidence of infection Minimize the risk of parasitic disease Control egg shedding Maintain effective anthelmintics NOT to eradicate infection 10

12 Resistance to anthelmentics Pyrantel Benzimidazoles Macrocyclic lactones Small strongyles Round worms Large strongyles US data South-eastern states Piperazine is not licensed in the US Testing for worms Kits available in Braidwood office No cost for kit Worm egg count = WEC 10 individual worm egg counts $

13 Why do worm egg counts? Determine the shedding status of a horse at the time of sampling To determine whether parasite burdens in foals and weanlings are roundworms or strongyle To evaluate the effectiveness of an anthelmintic Second WEC 14 days after treatment Limitations of WECs Do not accurately reflect the number of adult worms in the horse Unlike in sheep They do not detect the immature or larval stages Not good at detecting tapeworm infection Intermittent shedding 13

14 What to do - foals 2-3 months roundworm treatment (fendbendazole or oxibendazole) 6 months WEC, treat depending on worm type (strongyle or roundworms), another WEC 14 days after treatment 9 months of age treat for strongyles Older horses Yearlings and two-year-olds Younger animals shed more eggs 2 years treatments, spring and fall, WEC in summer In autumn, moxidectin or ivermectin plus praziquantel or (a double dose of) pyrantel Adults In autumn, moxidectin or ivermectin plus praziquantel or (a double dose of) pyrantel Selective therapy in the spring based on egg counts and repeat WEC 14 days after treatment 14

15 WEC when to treat EPG - no treatment EPG - if stocking rate low and pasture/manure management consider not treating and recheck but if no management then consider treatment >500 EPG - treat Final considerations Do not under dose use weight tapes or scales If you see a horse with signs of disease TREAT regardless of time of year If signs of intestinal parasitic disease use moxidectin In other species, combinations delay onset of resistance the best choice for horses? New introductions quarantine, deworm and WEC prior to mixing with resident horses AAEP Parasite Control Guidelines 15

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